My understanding of it is that the transference is being angry at your adopted mother and taking it out on your T, thinking/feeling she's rejecting you. I think it gets worked out as you slowly separate out that your adopted mother is not your T, catch yourself (or initially are caught by your T and recognize what she says is true) when you're in the midst of a transference situation and then slowly cease to make that "mistake" and your anger at your adopted mother rejecting you all those years ago doesn't matter as much because that's not happening now and you stay more in the now now, LOL.